# callsites > Get callsites from the [V8 stack trace API](https://v8.dev/docs/stack-trace-api) ## Install ``` $ npm install callsites ``` ## Usage ```js import callsites from 'callsites'; function unicorn() { console.log(callsites()[0].getFileName()); //=> '/Users/sindresorhus/dev/callsites/test.js' } unicorn(); ``` ## API Returns an array of callsite objects with the following methods: - `getThis`: Returns the value of `this`. - `getTypeName`: Returns the type of `this` as a string. This is the name of the function stored in the constructor field of `this`, if available, otherwise the object's `[[Class]]` internal property. - `getFunction`: Returns the current function. - `getFunctionName`: Returns the name of the current function, typically its `name` property. If a name property is not available an attempt will be made to try to infer a name from the function's context. - `getMethodName`: Returns the name of the property of `this` or one of its prototypes that holds the current function. - `getFileName`: If this function was defined in a script returns the name of the script. - `getLineNumber`: If this function was defined in a script returns the current line number. - `getColumnNumber`: If this function was defined in a script returns the current column number - `getEvalOrigin`: If this function was created using a call to `eval` returns a string representing the location where `eval` was called. - `isToplevel`: Is this a top-level invocation, that is, is this the global object? - `isEval`: Does this call take place in code defined by a call to `eval`? - `isNative`: Is this call in native V8 code? - `isConstructor`: Is this a constructor call? ---
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